Product Overview
The BQ4287MT is a high-performance Real-Time Clock (RTC) module manufactured by Texas Instruments, specifically designed for industrial automation and PLC applications. This integrated circuit provides precise timekeeping capabilities with non-volatile memory control, making it an essential component in modern industrial control systems where accurate timing and data retention are critical.
Key Features and Benefits
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Real-Time Clock with NVRAM Control: Combines precise timekeeping with non-volatile memory for data retention during power loss
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Low Power CMOS Design: Energy-efficient operation suitable for battery-backed applications
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Wide Input Frequency Range: Supports frequencies up to 30MHz for flexible system integration
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Spread Spectrum Clock Generation: Reduces electromagnetic interference (EMI) for improved system reliability
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Battery Backup Switching: Seamless transition between main power and backup battery
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Industrial Temperature Range: Operates reliably in harsh industrial environments
Technical Specifications
| Parameter | Specification | Description |
| Manufacturer | Texas Instruments | Industry-leading semiconductor manufacturer |
| Part Number | BQ4287MT-SB2 | Specific variant with DIP-20 packaging |
| Supply Voltage | 4.5V - 5.5V | Standard 5V operation range |
| Operating Temperature | 0°C to +70°C | Commercial temperature range |
| Memory Configuration | 114 x 8 bits | Non-volatile RAM for data storage |
| Clock Format | hh:mm:ss | 24-hour time format |
| Date Format | DD:MM:YYYY | European date format standard |
| Package Type | DIP-20 | Dual In-line Package, 20 pins |
Applications in PLC Industrial Automation
The BQ4287MT finds extensive applications in Programmable Logic Controller (PLC) systems and industrial automation:
Process Control Systems
In manufacturing and process control, the BQ4287MT provides accurate time stamps for production logs, batch tracking, and quality control records. Its non-volatile memory ensures critical timing data is preserved during power interruptions.
Data Logging and Monitoring
Industrial monitoring systems utilize the BQ4287MT's precise timing capabilities to timestamp sensor readings, alarm events, and system status changes, enabling comprehensive data analysis and troubleshooting.
Scheduled Operations
PLC systems use the real-time clock functionality to schedule maintenance routines, production cycles, and automated processes based on specific time intervals or calendar events.
Energy Management
In smart grid and energy management applications, the BQ4287MT helps coordinate power distribution, peak load management, and time-of-use billing systems.
Purchase Information
For reliable sourcing of the BQ4287MT IC chip, we recommend purchasing from authorized distributors. You can find this essential component for your PLC systems at: https://koeed.com/products/new-5pcs-bq4287mt-sb2-dip-20-ic
This link provides access to new BQ4287MT-SB2 IC chips in DIP-20 packaging, available in quantities of 5 pieces, perfect for industrial automation projects and PLC system maintenance.
Frequently Asked Questions (FAQ)
What is the primary function of the BQ4287MT in PLC systems?
The BQ4287MT serves as a Real-Time Clock module with non-volatile memory control, providing accurate timekeeping and data retention capabilities essential for timestamping events, scheduling operations, and maintaining system logs in industrial automation environments.
How does the battery backup feature work?
The BQ4287MT includes built-in battery backup switching circuitry that automatically detects power loss and switches to backup battery power, ensuring continuous operation of the real-time clock and preservation of non-volatile memory contents.
What is the significance of the spread spectrum clock feature?
The spread spectrum clock generation reduces electromagnetic interference (EMI) by slightly varying the clock frequency, which helps meet regulatory compliance requirements and improves overall system reliability in sensitive industrial environments.
Can the BQ4287MT be used in harsh industrial environments?
Yes, the BQ4287MT is designed for industrial applications with its robust CMOS design and specified operating temperature range. However, for extreme environments, additional protection measures may be necessary.
Where can I purchase genuine BQ4287MT components?
Technical References and Trust Metrics
The BQ4287MT is manufactured by Texas Instruments, a globally recognized leader in semiconductor technology with over 90 years of industry experience. Texas Instruments components are known for their reliability, quality, and extensive documentation support.
Industry Standards Compliance:
- ISO 9001:2015 Quality Management System certified manufacturing
- RoHS compliant for environmental safety
- Industrial-grade reliability testing
Documentation Availability:
- Complete datasheets available from Texas Instruments
- Application notes for industrial implementations
- Reference designs for PLC integration
Source: Texas Instruments BQ4287MT Datasheet, AllDatasheet.com, Mouser Electronics
Integration Considerations for PLC Systems
When integrating the BQ4287MT into PLC systems, consider the following:
Power Supply Requirements
Ensure stable 5V power supply with proper decoupling capacitors near the IC. The 4.5V to 5.5V operating range provides flexibility but requires clean power for optimal performance.
Backup Battery Selection
Select appropriate backup batteries based on expected power outage durations and environmental conditions. Lithium coin cells are commonly used for long-term backup.
PCB Layout Guidelines
Follow recommended PCB layout practices for clock circuits, including proper grounding, signal routing, and EMI reduction techniques to ensure reliable operation.
Software Implementation
Develop robust driver software for reading/writing time data, handling leap years, and managing non-volatile memory operations with error checking.
Conclusion
The BQ4287MT Real-Time Clock module represents a critical component in modern PLC and industrial automation systems. Its combination of precise timekeeping, non-volatile memory control, and industrial-grade reliability makes it an essential choice for applications requiring accurate timestamping, data retention, and scheduled operations. With Texas Instruments' proven track record in semiconductor manufacturing and comprehensive documentation support, the BQ4287MT provides a robust solution for industrial timing requirements.
For engineers and system integrators working on PLC projects, having access to genuine BQ4287MT components is crucial for system reliability. Source your components from trusted suppliers like https://koeed.com/products/new-5pcs-bq4287mt-sb2-dip-20-ic to ensure quality and performance in your industrial automation applications.